during a recent bout with the stomach flu. nbc's chief science and health correspondent bob bazell is at new york presbyterian hospital where secretary clinton is being treated. bob, i know this is a story we're all keeping a very close eye on. what's the latest? we know she has a blood clot that came from -- they say from the concussion. we know it's being treated with anti-coagulant drugs. a lot of doctors are puzzled by that series of events because most blood clots that come from a concussion would be in the brain, and they would not be treated with anti-coagulamt drugs. we don't know where it is or what her condition is. there's been no report about what her health status is other than she's under observation for these two days. there's a lot of puzzles here. a lot of people are hoping for the best, but clearly somebody doesn't come into the hospital over -- in the holiday berd just for a routine check-up, so something is going on. we hope to hear more, and we hope to see that she gets out of here in good shape pretty soon. we really -- i wish i had more informati information.